With a smart 12V trickle charger and maintainer, you can revive your car battery in a relatively short amount of time. And this one from GPED is discounted to $22 on clearance at Walmart , 56% off ...

In 2009, Porsche introduced a 12V lithium-ion starter battery as a $1,700 option, but only on its lightweight cars, the 911 GT3, GT3 RS, and Boxster Spyder. Porsche On the left, the Antigravity ...